#1F4F89#1F4F89

#1F4F89 is a dark, moderate cyan. Relative luminance 0.077; OKLCH L 42.6% C 0.109 H 255.0°. Best body text is #FFFFFF at 8.27:1 contrast (WCAG AA passes).

Color values

HEX	#1F4F89
RGB	rgb(31, 79, 137)
HSL	hsl(213, 63%, 33%)
HSV	hsv(213, 77%, 54%)
CMYK	cmyk(77.4%, 42.3%, 0%, 46.3%)
CIE-LAB	lab(33.33, 5.36, -36.98)
CIE-LCH	lch(33.33, 37.37, 278.25°)
OKLab	oklab(42.65% -0.0282 -0.1057)
OKLCH	oklch(42.65% 0.109 255)
XYZ	xyz(7.8747, 7.6885, 24.7311)
Luminance	0.0769 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4F89 #89591F

analogous

#1F8489 #1F4F89 #241F89

triadic

#1F4F89 #891F4F #4F891F

tetradic

#1F4F89 #891F84 #89591F #1F8924

square

#1F4F89 #891F84 #89591F #1F8924

split-complementary

#1F4F89 #89241F #84891F

monochromatic

#081525 #143257 #1F4F89 #2A6CBB #4C8BD6

Accessibility & contrast

On white

8.27

#1F4F89 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#1F4F89 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4F89

8.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4F89	#FFFFFF	#000000	##FFFFFF
##1F4F89	1.00	8.27	2.54	8.27
#FFFFFF	8.27	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#33548B

Deuteranopia (green-blind)

#214A88

Tritanopia (blue-blind)

#005D65

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1f4f89;
/* rgb */ color: rgb(31, 79, 137);
/* oklch */ color: oklch(42.6% 0.109 255.0);

Tailwind

colors: {
  custom: {
    50: '#6b7fac',
    500: '#1f4f89',
    950: '#000000',
  },
}

SCSS

$custom: #1f4f89;
$custom-light: #6b7fac;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4f89",
  "rgb": {
    "r": 31,
    "g": 79,
    "b": 137
  },
  "hsl": {
    "h": 212.83,
    "s": 63.095,
    "l": 32.941
  },
  "oklch": {
    "l": 0.42646,
    "c": 0.1094,
    "h": 255
  },
  "luminance": 0.07689
}

Semantic roles & 50–950 ramp

primary

#1F4F89

secondary

#B9874B

accent

#9C42E6

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070A10

muted

#7A7C7F

Preview Lab

Preview with #1F4F89

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →